Fewer cases of the two serious infectious diseases– typhoid and paratyphoid –have been found in Denmark in the last three years than in previous years, according to the latest annual statement from the Statens Serum Institut (SSI).
A total of 47 cases of the two diseases were registered in Denmark from 2019-2021. In comparison, in the years 2016-2018, a total of 65 cases were registered. This corresponds to a decrease of almost 28%.
“The vast majority of people who get typhoid or paratyphoid are infected when traveling abroad. Therefore, the decline we have seen is probably due to the fact that people have traveled less due to the travel restrictions that were introduced during the COVID-19 pandemic, ”says Peter H. Andersen from SSI.
About half of the cases – a total of 25 cases – were clinically reported. Out of the clinical reviews for 2019-2021, two of the cases are assumed to originate from infection in Denmark, while almost half of the affected persons are assumed to be infected on trips to Pakistan and 20% on trips in Cambodia.
Four cases of extensively drug resistant (XDR) S. Typhi were reported during the period. “Three of the four cases had recently been on a trip to Pakistan, where the incidence of these more resistant S. typhi has increased in recent years.” Other countries such as the US, Italy and the UK have also described imported cases from Pakistan of S. Typhi with more extensive resistance. There is still effective treatment for these bacteria, and vaccination against S. typhi will protect against them in the same way as it does against the other S. typhi “, says Peter H. Andersen
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